objective-c - Imageview 的“触摸区域矩形”在动画移动到其他位置后仍然存在

Question

我正在使用 CABasicAnimation 移动图像，但我注意到它的触摸事件矩形保持在其旧位置 - 如何更新矩形使其不会注册在错误的位置？

CABasicAnimation *theAnimation; 
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
theAnimation.duration=0.3;
theAnimation.repeatCount=0;
theAnimation.fillMode = kCAFillModeForwards;
theAnimation.removedOnCompletion = NO;
theAnimation.autoreverses=NO;
theAnimation.fromValue=[NSNumber numberWithFloat:0];
theAnimation.toValue=[NSNumber numberWithFloat:-rect.size.width*0.9];
[self.layer addAnimation:theAnimation forKey:@"animateLayer"];

Answer 1

在这种情况下，您需要移动, 而不是的TouchImageView子类。后者是一个较低级别的绘图表面，但不是处理触摸事件等的。UIImageViewself.layer

从iPad：Move UIView with animation, then move it back，这里有一些改编的代码可以translation像你一样为属性设置动画：

CGFloat moveX = -rect.size.width*0.9;
CGFloat moveY = 0;

[UIView beginAnimations: @"Move View" context:nil];
[UIView setAnimationDuration: 0.3 ];
self.transform = CGAffineTransformMakeTranslation(moveX,moveY);
[UIView commitAnimations];

但是，您应该能够通过更改视图的框架来简化这一点：

CGRect newFrame = self.frame;
newFrame.x -=rect.size.width*0.9;

[UIView beginAnimations: @"Move View" context:nil];
[UIView setAnimationDuration: 0.3 ];
self.frame = newFrame;
[UIView commitAnimations];